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Thermoplastic polyurethane composition for car interior surface material, and preparation method therefor

A thermoplastic polyurethane and skin material technology, applied in the field of thermoplastic polyurethane compositions, can solve the problems of low appearance quality, poor embossing realization, and low degree of design freedom, etc., and achieve excellent life wear resistance, increase productivity, and excellent mold release properties Effect

Inactive Publication Date: 2021-11-23
东成化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The TPO skin material formed by the vacuum forming process has improved scratch resistance through the painting process, but due to the characteristics of the vacuum forming process, the degree of freedom of design is low, and embossing is poorly realized, so the appearance quality is low

Method used

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  • Thermoplastic polyurethane composition for car interior surface material, and preparation method therefor
  • Thermoplastic polyurethane composition for car interior surface material, and preparation method therefor
  • Thermoplastic polyurethane composition for car interior surface material, and preparation method therefor

Examples

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preparation example Construction

[0066] As an example, the preparation method of the thermoplastic polyurethane composition of the present invention comprises: the step of polymerizing thermoplastic polyurethane by polymerizing polyol containing polyester polyol, diisocyanate and aromatic chain extender; aging the step of thermoplastic polyurethane ; a step of pulverizing the above-mentioned aged thermoplastic polyurethane; and a step of adding additives to the above-mentioned pulverized thermoplastic polyurethane, mixing and extruding. However, the aforementioned preparation method of the present invention can be carried out by modifying or selectively mixing the steps of each process as required.

[0067] Hereinafter, the method for preparing the thermoplastic polyurethane composition of the present invention will be described by dividing it into each process step.

[0068] First, thermoplastic polyurethane is polymerized by mixing and polymerizing polyol containing polyester polyol, crystalline diisocyanat...

Embodiment 1

[0091] 1-1. Preparation of thermoplastic polyurethane composition

[0092] Using each component according to the composition described in Table 1 below, a thermoplastic polyurethane composition was prepared as follows.

[0093] Specifically, at a temperature of 120°C, the ether group-containing polyester polyol (hydroxyl value: 54.00 mgKOH / g) prepared in Preparation Example 1, HQEE, the first antioxidant (Irganox1010, BASF), anti-hydrolysis agent (Staboxol I, Rheinchemie) and a second antioxidant (Irgafos 126) were first mixed for 2 minutes. Thereafter, hexamethylene diisocyanate (HDI) and isophorone diisocyanate (IPDI) were added thereto, and the second mixing was performed at a speed of 500 rpm for 3 minutes to obtain thermoplastic polyurethane. Next, the above thermoplastic polyurethane (TPU) was aged for 6 hours under a warm temperature of 120°C. Thereafter, the above-mentioned thermoplastic polyurethane was pulverized at normal temperature to obtain a thermoplastic po...

Embodiment 2 to Embodiment 5、 comparative example 1 to comparative example 4

[0098] The thermoplastic polyurethane compositions and automotive interior skin materials of Examples 2-5 and Comparative Examples 1-4 were prepared in the same manner as in Example 1, except that each component was used according to the composition described in Table 1 below.

[0099] Table 1

[0100]

[0101]

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Abstract

The present invention relates to a thermoplastic polyurethane composition for a car interior surface material, and a preparation method therefor. The thermoplastic polyurethane composition for a car interior surface material has excellent processability such as demoldability, has a short molding time, and enables a car interior surface material having excellent scratch resistance, daily scratch resistance (nails), whitening resistance (non-blooming performance), abrasion resistance, quality of appearance, formability and durability to be manufactured.

Description

technical field [0001] The invention relates to a thermoplastic polyurethane composition used for automotive interior skin materials and a preparation method thereof. Background technique [0002] Among the automotive interior materials, crash pads (Crashpad), door trim panels (Door Trim) and console box (Console box) skin materials are the parts that users can touch sensibly at the closest place. However, conventionally known skin materials for automotive interior materials have excellent sensory qualities including odor, touch, and appearance quality, etc., and have excellent durability against ultraviolet rays, heat, and humidity in the air for a long time And the deployment performance of the invisible passenger airbag (Invisible passenger air-bag), but the scratch resistance is not excellent. [0003] Korean Patent Publication No. 10-0508655 describes a thermoplastic polyurethane skin material made of ether-containing polyester polyol, a method for preparing it, and a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/42C08G18/08C08L75/04
CPCC08G18/4252C08G18/4238C08G18/3215C08G18/664C08G18/73C08G18/755C08G18/722C08L75/06C08G2140/00C08G18/42C08G18/089C08L75/04
Inventor 权带宁朴在录李在璨金珉坤
Owner 东成化学有限公司
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